Spring-retainer



. VASSELLI.

SPRING RETAINER.

APPLICATION FILED IVI/III.

Patented Aug. 24, 1920.

; UNITED STATES PATENT OFFICE.

ANTHONY VASSVELLI, OF NEWARK, NEW JERSEY, ASSIGNOR, BY MESNE ASSIGN-MENTS, T0 HARRIMAN NATIONAL BANK OFA THE CITY OF NEW YORK, TRUSTEE.

'SPRING-RETAINER.

To all whom #may concern:

Be it known that I, ANTHONY VAssnLLr, a citizen of the United States,and a resident of Newark, county of Essex, and State of New Jersey, haveinvented a certain new and useful Spring-Retainer, of which thefollowing is a specification.

My invention relates to device for retaining spiral coil springs incircular forms at all times during operation.

The objects of my invention are to provide means for preventing the highpercentage of breakage in spiralsprings during use, and to facilitateplacing of such springs in operative position.

i further object of my invention is to produce a device of thecharacter' described, simple in construction, thoroughly reliableandefticient in its purpose, positive in operation, easily manufactured,and which will facilitate assembling, and be inexpensive to manufacture.

lWith these and other objects in view to be more fully set forthhereinafter, the invention consists in the novel construction,combination of elements, and arrangement of parts which will beexemplified in the construction hereinafter described in the specicationand illustrated in the accompanying drawings considered together orseparately.

The inventive idea involved is capable of receiving a variety ofmechanical expressions, one 'of which for the purpose of illus'- tratingthe invention, is shown in the accompanying drawings.

The invention will be first described in connection with theaccompanying drawings illustrating one embodiment of my invention,wherein similar reference characters are used to designate correspondingparts throughout the several views, and then more specifically definedand indicated in the appended claims.

In positionin T a spiral spring in a spring barrel, as in a motor of atalking machine, the end of the outer convolution is secured to theinner side of the rim of thebarrel, and the end of the inner convolutionis secured'` to the shaft which is to be driven, or a sleeve thereto, orto the winding shaft, as the case may be.

The diameter of theV spring barrel must be greater than the coil of thespring to allow Specification of Letters Patent. Patented Aug 24:, 1920Application filed March 10, 1919.

Serial No. 281,776.

for the fastening means by which the spring is secured to the barrel.

lv'hen the spring is released after being placed in position, itimmediately expands and assumes a more or less oval form. l Theconvolutions at the side of the coil nearest the -fasteiiing meansalways lie close together, while the convolutions diametrically oppositethe fastening means are farther from the center of the coil. Theoutermost convolution opposite the point of attachment to the springbarrel is always rubbing against tlieside of the barrel. The strain onthe spring` is unevenly distributed, and the result is a largepercentage of breakage occurs within an extremely short period of usageof the spring. By the use of my invention such defects and breakages areobv iated.

ln the drawings,

Figure l is a transverse section of a spring barrel with a spiralsprinO` secured therein and my invention applied thereto, and

l 2 is a perspective view of the retainring. n carrying out my inventionI provide s ing barrel l in which is secured a shaft ecured to and woundupon the shaft 2 is a spiral spring 3. The outer extremity of the springis provided with a slot t through which projects a staple 5, riveted orotherwise secured to the inside of the cylindrical wall of the barrel.pin 6 is passed through the perforation of the staple bcneath the end ofthe outer convolution of the spring and securely retains that end of thespring in position.

A., ring 7 of an interior diameter, equal to that of the normal diameterof the spiral coil spring, is placed over the periphery of the spring.The ring 7 is not continuous but is provided with an opening for a shortdistance for the purposes hereinafter mentioned. The bulge in the end ofthe spring caused by the engagement of the said end with the staple 5and the pin 6 together with such staple and pin rest within the openspace between the ends of the ring member 7.

The ring 7 is of a strength sufficient to withstand the expansive forceof the spring.

The outside diameter of the ring 7 is such that it will make a snug litwithin the spring barrel, and the spring will be held in ciril l a) andaccomplish these results.

direct cause of the high percentage of brealrage in springs. Y

rIliat part of the springV opposite the staple cannot bulge and therewill be no rubbing of the outer convolution against the wall of thebarrel. The split ring not oniy retains the Aspring in its propercircular form but it tends to hold the pin 6 securely in position assaid ring presses the end of the spring against the pin.

The presence of the ring 7 will greatly facilitate the assembling of thespring within the barrel as the spring will always be in condition to behandled without buig ing; Whereas,'heretofore, without such ring it wasvery difficult to position the spring in place in the barrel'.

The-ring 7 may be placed in position during the manufacture ofthespring, it may be adjusted in place just before the spring is placed inthe barrel, or it may be placed in j position after the spring is inplace.

In accordance with the provisions of the patent statutes, I havedescribed the principle of -my invention together with the apparatuswhich I now consider to represent the best embodiment thereof, but Idesire it understood that my invention is not conned to the'particularform of apparatus herein shown and described, the same being merelyillustrative, and that the invention can be carried out in other wayswithout departing from the spirit of my invention, and therefore, Iclaim broadly the right to employ all equivalent instrumentalitiescoming within the scope of the appended claims, and by means of whichobjects of my inven tion are attained, and the new results accomplished,as herein set forth, as it is obvious that the particular embodimentherein shown and described is only oneof many that can be employed toattain these objects I-Iaving now described my invention, what I claimand desire to secure by vLetters Patent is as follows: c y

l. A device of the character described, which comprises a casing, aspringwound in spiral form, one end of said spring being secured to thecasing, and a permanent keeper engaging theperiphery of the spring andthe interior surface of the casing.

2. A device of the character described, which comprises a cylindricalcasing, a spring wound in spiral form within the casing, one end of saidspring being Asecured to the casing, and a permanent keeper engaging themajor portion of the periphery ofthe spring and the inner surface of thecasing. n

3. A device of the character described comprising a spring barrel, ashaft, a spring wound in spiral formA within the barrel, one end of saidspring being attached to the barrel, the other end of the spring beingattached to the shaft, and a member permanently disposed between thespring and the barrel for retaining the spring in circular form, saidmember being unsecured to the spring and barrel. Y

4. A device of the character described, comprising a spring barrel, ashaft, a spring wound in spiral form within the barrel, means forattaching one end of the spring to the barrel, means onl the shaftforattachment of the other end ofthe spring, and a member engagingVbetweenthe spring and the barrel for permanently retaining the sprino'in circular form.

5. device of the character` described, comprising a spring barrel, ashaft, a spring wound in spiral form within the barrel. means forattaching one end of the spring to the barrel, means on the'shaft forattachment of the other end of the spring, and a member between thespring and the barrel, said member' engaging the spring for the majorportion of the outer periphery of the spring and of the inner peripheryof the barrel, for retaining the springin circular form. Y

6. A device of the character described comprising a spring barrel, ashaft, a spring wound inl spiral form within the barrel, means forattaching one end of the spring to the barrel, means on the shaft forattachment of the other end of the spring, and a member between thespring and the barrel for retaining the spring in circular form; therebeing a gap in the member, the means lying within the gap `for attachingthe spring to the barrel. Y

Th's specification signed and witnessed this 6th day of March, 1919. Y

v ANTHONY VASSELLI.

iVVitnesses JOHN L. Lorsorr, M. JONES.

